Center for Watershed Protection. 2017. Documentation for Stormwater Performance-Based Credit. Crediting Framework Product #7 for the project Making Urban Trees Count: A Project to Demonstrate the Role of Urban Trees in Achieving Regulatory Compliance for Clean Water. Center for Watershed Protection, Ellicott City, MD. The Center for Watershed Protection Developed a Stormwater Performance Based Credit for tree planting. This national credit can be adopted by regulatory agencies who wish to offer a science-based credit that encourages greater use of tree planting for meeting stormwater management requirements. The credit quantifies an event-based reduction in runoff volume and nutrient and sediment loads associated with tree planting. This document provides the documentation for the credit.